JP6983274B2 - Rotor of rotary electric machine and its manufacturing method - Google Patents

Description

The present application relates to a rotor of a rotary electric machine and a method for manufacturing the same.

A rotary electric machine mounted on a vehicle such as a hybrid vehicle or an electric vehicle and used as an electric motor or a generator is a rotor composed of a rotor core in which electromagnetic steel sheets are laminated and a permanent magnet fixed to the rotor core. have. The rotor core is provided with a magnet insertion hole for inserting a permanent magnet, and the rotor is manufactured by inserting the permanent magnet into the magnet insertion hole. Since the permanent magnet may crack due to vibration during operation of the rotary electric machine and pop out from the rotor core, a configuration for fixing the permanent magnet by filling the gap between the rotor core and the permanent magnet with an adhesive is disclosed. (See, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2006-109683

The rotor of a rotary electric machine disclosed in Patent Document 1 is provided with flux barrier holes at both ends of a magnet insertion hole for inserting a permanent magnet to prevent the magnetic flux generated by the permanent magnet from being short-circuited. When filling the gap between the rotor core and the permanent magnet, the flux barrier hole is also filled with the adhesive, so use more adhesive than the adhesive required to fix the permanent magnet. Therefore, there is a problem that the material cost of the adhesive becomes high. Further, since the amount of the adhesive used is large, there is a problem that it takes time to cure the adhesive and the productivity is deteriorated.

The present application has been made to solve the above-mentioned problems, and by reducing the amount of the adhesive used to fill the gap between the rotating iron core and the permanent magnet in order to fix the permanent magnet, the material of the adhesive is used. The purpose is to obtain a rotor of a rotating electric machine that can reduce the cost.

The rotor of the rotating electric machine disclosed in the present application is a rotor of a rotating electric machine in which a permanent magnet is incorporated in a rotor core, and the inserted permanent magnet is fixed to the rotor core by a magnet. Holes, inner diameter side flux barrier holes provided at the inner diameter side end of the magnet insertion hole, outer diameter side flux barrier holes provided at the outer diameter side end of the magnet insertion hole, inner diameter side flux barrier hole, and A columnar columnar member arranged in a columnar shape is provided between at least one of the outer diameter side flux barrier holes and a permanent magnet, and in the inner diameter side flux barrier hole or the outer diameter side flux barrier hole in which the columnar member is arranged. , The amount of adhesive is less than the amount of adhesive filled in the magnet insertion hole .

According to the rotor of the rotary electric machine disclosed in the present application, it is possible to prevent the flux barrier hole from being filled with the adhesive by the columnar member arranged between the flux barrier hole and the permanent magnet, so that the permanent magnet can be prevented. By reducing the amount of adhesive used to fill the gap between the rotor core and the permanent magnet to fix the magnet, the material cost of the adhesive can be reduced.

It is a top view which shows the rotor of the rotary electric machine which concerns on Embodiment 1. FIG. It is a partial plan view which shows a part of the rotor which concerns on Embodiment 1. FIG. It is a top view which shows the rotor of the rotary electric machine which concerns on Embodiment 2. It is a partial plan view which shows a part of the rotor which concerns on Embodiment 2. FIG. It is a partial plan view which shows a part of the rotor which concerns on Embodiment 3. FIG. It is a partial plan view which shows a part of the rotor which concerns on Embodiment 4. FIG. It is a top view which shows the rotor of the rotary electric machine which concerns on Embodiment 5. It is a figure which shows an example of the flowchart in the manufacturing method of the rotor which concerns on embodiment. It is a figure which shows the flowchart in another manufacturing method of the rotor which concerns on embodiment.

Hereinafter, the rotor of the rotary electric machine according to the embodiment will be described with reference to the drawings. In each figure, the same or corresponding parts are designated by the same reference numerals.

Embodiment 1.
FIG. 1 is a plan view showing a rotor of a rotary electric machine according to the first embodiment. FIG. 2 is a partial plan view showing a part of the rotor according to the first embodiment.
The rotor 1 includes a rotor core 2 formed by laminating rotor core pieces, a permanent magnet 3 incorporated in the rotor core 2, an inner diameter side columnar member 4a and an outer diameter side columnar member as columnar members. It has 4b.
The rotor core 2 is provided with at least one pair of magnet insertion holes 5 constituting one pole of the rotor 1 in a V-shaped arrangement, and the magnet insertion holes 5 are permanent magnets in the axial direction of the rotor 1. It has a depth into which 3 can be inserted.

The pair of magnet insertion holes 5 are formed in a V shape so that the distance between them is wider on the outer peripheral side than on the inner peripheral side, and at the end of the rotor core of the magnet insertion holes 5 on the inner diameter side. An inner diameter side flux barrier hole 6a is provided, and an outer diameter side flux barrier hole 6b is provided at an end portion of the rotor core of the magnet insertion hole 5 on the outer diameter side. The permanent magnet 3 is inserted into the magnet insertion hole 5, and the thermosetting adhesive 7 is filled in the gap between the permanent magnet 3 and the magnet insertion hole 5.

The columnar member is composed of an inner diameter side columnar member 4a and an outer diameter side columnar member 4b, and the inner diameter side columnar member 4a is arranged between the inner diameter side flux barrier hole 6a and the permanent magnet 3, and the outer diameter side columnar member 4a. The 4b is arranged between the outer diameter side flux barrier hole 6b and the permanent magnet 3 to prevent the adhesive 7 from flowing into the inner diameter side flux barrier hole 6a and the outer diameter side flux barrier hole 6b.

According to the above configuration, the inner diameter side columnar member 4a arranged between the inner diameter side flux barrier hole 6a and the permanent magnet 3 suppresses the filling of the inner diameter side flux barrier hole 6a with the adhesive 7, and the outer diameter is also suppressed. Since the outer diameter side columnar member 4b arranged between the side flux barrier hole 6b and the permanent magnet 3 suppresses the filling of the outer diameter side flux barrier hole 6b with the adhesive, in order to fix the permanent magnet 3 It is possible to reduce the amount of adhesive used to fill the gap between the rotor core 2 and the permanent magnet 3, reduce the material cost of the adhesive, shorten the time to cure the adhesive, and improve productivity. Can be done.

In the above embodiment, both the inner diameter side columnar member 4a and the outer diameter side columnar member 4b are provided as the columnar member, but either the inner diameter side columnar member 4a or the outer diameter side columnar member 4b is columnar. It may be configured to be provided as a member, and the same effect can be obtained.

FIG. 8 is a flowchart for explaining a method of manufacturing a rotor according to the first embodiment.
First, in the electromagnetic steel sheet processing step S10, the rotor core pieces constituting the rotor core 2 are punched out from the electromagnetic steel sheet which is the base material, and the magnet insertion hole 5, the inner diameter side flux barrier hole 6a, and the outer diameter side flux barrier hole 6b are punched out. Is formed.

In the electromagnetic steel sheet laminating step S11, the rotor core pieces formed of the electromagnetic steel sheet are laminated to form the rotor core 2. The laminated electrical steel sheets are integrated by caulking, bonding, welding, or the like.

After integrating the rotor core pieces, in the columnar member insertion step S12, the inner diameter side columnar member 4a and the outer diameter side columnar member 4b are inserted into the magnet insertion hole 5 from the stacking direction of the rotor core.

In the adhesive filling step S13, the adhesive 7 is filled in the magnet insertion hole 5. At this time, since the inner diameter side columnar member 4a and the outer diameter side columnar member 4b are inserted, the adhesive does not flow into the inner diameter side flux barrier hole 6a and the outer diameter side flux barrier hole 6b.

In the permanent magnet insertion step S14, the permanent magnet 3 is inserted into the magnet insertion hole 5 from the stacking direction of the rotor core 2. By inserting the permanent magnet 3 into the magnet insertion hole 5, the liquid level of the adhesive filled in the magnet insertion hole 5 rises. The filling amount of the adhesive is such that the liquid level of the adhesive filled in the gap between the permanent magnet 3 and the magnet insertion hole 5 is lower than the axial height of the inner diameter side columnar member 4a and the outer diameter side columnar member 4b. To.

According to the above manufacturing method, it is possible to prevent the adhesive from leaking from the magnet insertion hole 5 to the inner diameter side flux barrier hole 6a and the outer diameter side flux barrier hole 6b.

The above manufacturing method is an example in which both the inner diameter side columnar member 4a and the outer diameter side columnar member 4b are provided, but either one of the inner diameter side columnar member 4a and the outer diameter side columnar member 4b is used as the columnar member. It is also possible to apply it to a method for manufacturing a rotor configured to be provided, and the same effect can be obtained.

Embodiment 2.
FIG. 3 is a plan view showing a rotor of the rotary electric machine according to the second embodiment. FIG. 4 is a partial plan view showing a part of the rotor according to the second embodiment.
The rotor 1 includes a rotor core 2 formed by laminating rotor core pieces, a permanent magnet 3 incorporated in the rotor core, an inner diameter side columnar member 4c and an outer diameter side columnar member 4d as columnar members. It is equipped with.
The rotor core 2 is provided with at least one pair of magnet insertion holes 5 constituting one pole of the rotor 1 in a V-shaped arrangement, and the magnet insertion holes 5 are permanent magnets in the axial direction of the rotor 1. It has a depth into which 3 can be inserted.

The pair of magnet insertion holes 5 are formed in a V shape so that the distance between them is wider on the outer peripheral side than on the inner peripheral side, and the inner diameter side flux barrier is formed at the inner diameter side end of the magnet insertion holes 5. The holes 6a are provided with outer diameter side flux barrier holes 6b at the ends of the magnet insertion holes 5 on the outer diameter side.

An inner diameter side outer peripheral columnar member insertion groove 8a and an outer diameter side outer peripheral columnar member insertion groove 8b are provided on the outer peripheral side of the magnet insertion hole 5. The inner diameter side outer peripheral columnar member insertion groove 8a is on the outer peripheral side between the magnet insertion hole 5 and the inner diameter side flux barrier hole 6a, and the outer diameter side outer peripheral columnar member insertion groove 8b is the magnet insertion hole 5 and the outer diameter side flux barrier hole 6b. They are arranged on the outer peripheral side of the space. The permanent magnet 3 is inserted into the magnet insertion hole 5, and the thermosetting adhesive 7 is filled in the gap between the permanent magnet 3 and the magnet insertion hole 5.

The columnar member is composed of an inner diameter side columnar member 4c and an outer diameter side columnar member 4d. The inner diameter side columnar member 4c is inserted into the inner diameter side outer peripheral columnar member insertion groove 8a and is arranged between the inner diameter side flux barrier hole 6a and the permanent magnet 3, and the outer diameter side columnar member 4d is the outer diameter side outer peripheral columnar member. It is inserted into the member insertion groove 8b and is arranged between the outer diameter side flux barrier hole 6b and the permanent magnet 3, and the adhesive 7 flows into the inner diameter side flux barrier hole 6a and the outer diameter side flux barrier hole 6b. To prevent.

According to the above configuration, the inner diameter side columnar member 4c arranged between the inner diameter side flux barrier hole 6a and the permanent magnet 3 suppresses the filling of the inner diameter side flux barrier hole 6a with the adhesive, and the outer diameter side. Since the outer diameter side columnar member 4d arranged between the flux barrier hole 6b and the permanent magnet 3 suppresses the filling of the outer diameter side flux barrier hole 6b with the adhesive, in order to fix the permanent magnet 3 It is possible to reduce the amount of adhesive used to fill the gap between the rotor core 2 and the permanent magnet 3, reduce the material cost of the adhesive, shorten the time to cure the adhesive, and improve productivity. Can be done.

In the above embodiment, both the inner diameter side columnar member 4c and the outer diameter side columnar member 4d are provided as the columnar member, but either the inner diameter side columnar member 4c or the outer diameter side columnar member 4d is columnar. It may be configured to be provided as a member, and the same effect can be obtained.

FIG. 9 is a flowchart for explaining a method of manufacturing a rotor according to the second embodiment.
First, in the electromagnetic steel sheet processing step S20, the rotor core pieces constituting the rotor core 2 are punched out from the electromagnetic steel sheet which is the base material, and the magnet insertion hole 5, the inner diameter side flux barrier hole 6a, and the outer diameter side flux barrier hole 6b are punched out. , The inner diameter side outer peripheral columnar member insertion groove 8a and the outer diameter side outer peripheral columnar member insertion groove 8b are formed.

In the electromagnetic steel sheet laminating step S21, the rotor core pieces formed of the electromagnetic steel sheet are laminated to form the rotor core 2. The laminated electrical steel sheets are integrated by caulking, bonding, welding, or the like.

In the permanent magnet, columnar member coupling step S22, the inner diameter side columnar member 4c and the outer diameter side columnar member 4d are fixed to the permanent magnet 3 by a fixing method such as welding, bonding, welding, etc. to form a bonded body.

In the combined body insertion step S23, the inner diameter side columnar member 4c, the outer diameter side columnar member 4d, and the permanent magnet 3 are inserted into the magnet insertion hole 5 from the stacking direction of the rotor core 2.
The inner diameter side columnar member 4c is positioned on a plane perpendicular to the stacking direction by inserting and fitting the inner diameter side columnar member 4c into the inner diameter side outer peripheral columnar member insertion groove 8a from the stacking direction of the rotor core 2. The outer diameter side columnar member 4d is positioned by being inserted into the outer diameter side outer peripheral columnar member insertion groove 8b from the stacking direction of the rotor core 2 and aligned.

In the adhesive filling step S24, the adhesive 7 is filled in the magnet insertion hole 5. At this time, since the inner diameter side columnar member 4c and the outer diameter side columnar member 4d are inserted into the magnet insertion hole 5, the inner diameter side outer peripheral columnar member insertion groove 8a, and the outer diameter side outer peripheral columnar member insertion groove 8b, the inner diameter side flux barrier hole The flow of the adhesive into the 6a and the flux barrier hole 6b on the outer diameter side is suppressed.
The filling amount of the adhesive is such that the liquid level of the adhesive filled in the gap between the permanent magnet 3 and the magnet insertion hole 5 is lower than the axial height of the inner diameter side columnar member 4a and the outer diameter side columnar member 4d. To.

According to the above manufacturing method, it is possible to prevent the adhesive from leaking from the magnet insertion hole 5 to the inner diameter side flux barrier hole 6a and the outer diameter side flux barrier hole 6b.

The above manufacturing method is an example in which both the inner diameter side columnar member 4c and the outer diameter side columnar member 4d are provided, but either one of the inner diameter side columnar member 4c and the outer diameter side columnar member 4d is used as the columnar member. It is also possible to apply it to a method for manufacturing a rotor configured to be provided, and the same effect can be obtained.

Embodiment 3.
FIG. 5 is a partial plan view showing a part of the rotor of the rotary electric machine according to the third embodiment.
The rotor core 2 is provided with at least one pair of magnet insertion holes 5 constituting one pole of the rotor 1 in a V-shaped arrangement, and the magnet insertion holes 5 are permanent magnets in the axial direction of the rotor 1. It has a depth into which 3 can be inserted.

The pair of magnet insertion holes 5 are formed in a V shape so that the distance between them is wider on the outer peripheral side than on the inner peripheral side, and the inner diameter side flux barrier is formed at the inner diameter side end of the magnet insertion holes 5. The holes 6a are provided with outer diameter side flux barrier holes 6b at the ends of the magnet insertion holes 5 on the outer diameter side.

An inner peripheral columnar member insertion groove 8c on the inner diameter side and an inner peripheral columnar member insertion groove 8d on the outer diameter side are provided on the inner peripheral side of the magnet insertion hole 5. The inner peripheral columnar member insertion groove 8c on the inner diameter side is on the inner peripheral side between the magnet insertion hole 5 and the flux barrier hole 6a on the inner diameter side, and the inner peripheral columnar member insertion groove 8d on the outer diameter side is the magnet insertion hole 5 and the flux barrier on the outer diameter side. They are arranged on the inner peripheral side between the holes 6b, respectively. The permanent magnet 3 is inserted into the magnet insertion hole 5, and the thermosetting adhesive 7 is filled in the gap between the permanent magnet 3 and the magnet insertion hole 5.

The columnar member is composed of an inner diameter side columnar member 4e and an outer diameter side columnar member 4f. The inner diameter side columnar member 4e is inserted into the inner diameter side inner peripheral columnar member insertion groove 8c and is arranged between the inner diameter side flux barrier hole 6a and the permanent magnet 3, and the outer diameter side columnar member 4f is inside the outer diameter side. It is inserted into the peripheral member insertion groove 8d and is arranged between the outer diameter side flux barrier hole 6b and the permanent magnet 3, and the adhesive 7 is placed in the inner diameter side flux barrier hole 6a and the outer diameter side flux barrier hole 6b. Stop flowing.

According to the above configuration, the inner diameter side columnar member 4e arranged between the inner diameter side flux barrier hole 6a and the permanent magnet 3 suppresses the filling of the inner diameter side flux barrier hole 6a with the adhesive, and the outer diameter side. Since the outer diameter side columnar member 4f arranged between the flux barrier hole 6b and the permanent magnet 3 suppresses the filling of the outer diameter side flux barrier hole 6b with the adhesive, in order to fix the permanent magnet 3 It is possible to reduce the amount of adhesive used to fill the gap between the rotor core 2 and the permanent magnet 3, reduce the material cost of the adhesive, shorten the time to cure the adhesive, and improve productivity. Can be done.

In the above embodiment, both the inner diameter side columnar member 4e and the outer diameter side columnar member 4f are provided as the columnar member, but either the inner diameter side columnar member 4e or the outer diameter side columnar member 4f is columnar. It may be configured to be provided as a member, and the same effect can be obtained.

Also in the third embodiment, the rotor can be manufactured by the manufacturing method shown in the flowchart of FIG. 9 as in the second embodiment.

Embodiment 4.
FIG. 6 is a partial plan view showing a part of the rotor of the rotary electric machine according to the fourth embodiment.
The rotor core 2 is provided with at least one pair of magnet insertion holes 5 constituting one pole of the rotor 1 in a V-shaped arrangement, and the magnet insertion holes 5 are permanent magnets in the axial direction of the rotor 1. It has a depth into which 3 can be inserted.

The pair of magnet insertion holes 5 are formed in a V shape so that the distance between them is wider on the outer peripheral side than on the inner peripheral side, and the inner diameter side flux barrier is formed at the inner diameter side end of the magnet insertion holes 5. The holes 6a are provided with outer diameter side flux barrier holes 6b at the ends of the magnet insertion holes 5 on the outer diameter side.

An inner diameter side outer peripheral columnar member insertion groove 8a and an outer diameter side outer peripheral columnar member insertion groove 8b are provided on the outer peripheral side of the magnet insertion hole 5, and an inner diameter side inner peripheral columnar member insertion groove 8b is provided on the inner peripheral side of the magnet insertion hole 5. 8c and an inner peripheral columnar member insertion groove 8d on the outer diameter side are provided. The inner diameter side outer peripheral columnar member insertion groove 8a is on the outer peripheral side between the magnet insertion hole 5 and the inner diameter side flux barrier hole 6a, and the outer diameter side outer peripheral columnar member insertion groove 8b is the magnet insertion hole 5 and the outer diameter side flux barrier hole 6b. They are arranged on the outer peripheral side of the space. Further, the inner peripheral columnar member insertion groove 8c on the inner diameter side is on the inner peripheral side between the magnet insertion hole 5 and the flux barrier hole 6a on the inner diameter side, and the inner peripheral columnar member insertion groove 8d on the outer diameter side is the magnet insertion hole 5 and the outer diameter side. They are arranged on the inner peripheral side between the flux barrier holes 6b, respectively. The permanent magnet 3 is inserted into the magnet insertion hole 5, and the thermosetting adhesive 7 is filled in the gap between the permanent magnet 3 and the magnet insertion hole 5.

The columnar member is composed of an inner diameter side columnar member 4g and an outer diameter side columnar member 4h. The inner diameter side columnar member 4g is inserted into the inner diameter side outer peripheral columnar member insertion groove 8a and the inner diameter side inner peripheral columnar member insertion groove 8c, and is arranged between the inner diameter side flux barrier hole 6a and the permanent magnet 3 and is located outside. The radial side columnar member 4h is inserted into the outer diameter side outer peripheral columnar member insertion groove 8b and the outer diameter side inner peripheral columnar member insertion groove 8d, and is arranged between the outer diameter side flux barrier hole 6b and the permanent magnet 3. , Prevents the adhesive 7 from flowing into the inner diameter side flux barrier hole 6a and the outer diameter side flux barrier hole 6b.

According to the above configuration, the inner diameter side flux barrier hole 6a is suppressed from being filled with the adhesive by the inner diameter side columnar member 4g arranged between the inner diameter side flux barrier hole 6a and the permanent magnet 3, and the outer diameter side is also suppressed. Since the outer diameter side columnar member 4h arranged between the flux barrier hole 6b and the permanent magnet 3 suppresses the filling of the outer diameter side flux barrier hole 6b with the adhesive, in order to fix the permanent magnet 3 It is possible to reduce the amount of adhesive used to fill the gap between the rotor core 2 and the permanent magnet 3, reduce the material cost of the adhesive, shorten the time to cure the adhesive, and improve productivity. Can be done.

In the above embodiment, both the inner diameter side columnar member 4g and the outer diameter side columnar member 4h are provided as the columnar member, but either the inner diameter side columnar member 4g or the outer diameter side columnar member 4h is columnar. It may be configured to be provided as a member, and the same effect can be obtained.

Also in the above-described fourth embodiment, the rotor can be manufactured by the manufacturing method shown in the flowchart of FIG. 9 as in the second and third embodiments.

Embodiment 5.
FIG. 7 is a plan view showing a rotor of the rotary electric machine according to the fifth embodiment.
In each of the above embodiments, a prismatic columnar member is provided as a columnar member so as to function as a partition for partitioning between the inner diameter side flux barrier hole 6a or the outer diameter side flux barrier hole 6b and the region of the magnet insertion hole 5. As illustrated in FIG. 7, the inner diameter side columnar member 4i and the outer diameter side columnar member 4j, which are columnar columnar members having a longitudinal direction in the axial direction, are generally formed with the inner diameter side flux barrier hole 6a or the outer diameter. It may be configured to cover the region of the side flux barrier hole 6b and to be provided in the region between the magnet insertion hole 5 and the magnet insertion hole 5.
In such a configuration, the cylindrical inner diameter side columnar member 4i and the outer diameter side columnar member 4j completely partition the area between the inner diameter side flux barrier hole 6a or the outer diameter side flux barrier hole 6b and the permanent magnet 3. Although it does not function as a partition, for example, when the adhesive 7 is filled in the magnet insertion hole 5 in the adhesive filling step S24 in FIG. 9, the cylindrical inner diameter side columnar member 4i and the outer diameter side columnar member 4j are formed. By arranging the adhesive, the filling of the adhesive into the inner diameter side flux barrier hole 6a or the outer diameter side flux barrier hole 6b is suppressed to some extent. Therefore, although the specific illustration of the region where the adhesive 7 is arranged is omitted, the filling of the adhesive in the inner diameter side flux barrier hole 6a or the outer diameter side flux barrier hole 6b is suppressed. As a result, the adhesive filled in the inner diameter side flux barrier hole 6a or the outer diameter side flux barrier hole 6b is larger than the amount of the adhesive 7 filled in the magnet insertion hole 5 (or the filling rate per volume). A state in which the amount of the agent (or the filling rate per volume) is smaller can be obtained.
That is, when comparing both sides of the inner diameter side columnar member 4i and the outer diameter side columnar member 4j, the amount of adhesive (or the amount of the adhesive in the region far from the permanent magnet 3 is compared with the region closer to the permanent magnet 3). A state in which the filling rate per volume) is small, or a state in which the adhesive is not filled in the region far from the permanent magnet 3 can be obtained.
In the above embodiment, both the inner diameter side columnar member 4i and the outer diameter side columnar member 4j are provided as the columnar member, but either the inner diameter side columnar member 4i or the outer diameter side columnar member 4j is columnar. It may be configured to be provided as a member, and the same effect can be obtained.
Further, also in the fifth embodiment, the rotor can be manufactured by appropriately selecting the manufacturing method shown in the flowcharts of FIGS. 8 and 9 in the same manner as in each of the above-described embodiments.

Although the present application describes various exemplary embodiments and examples, the various features, embodiments, and functions described in one or more embodiments are applications of a particular embodiment. It is not limited to, but can be applied to embodiments alone or in various combinations.
Therefore, innumerable variations not exemplified are envisioned within the scope of the techniques disclosed herein. For example, it is assumed that at least one component is modified, added or omitted, and further, at least one component is extracted and combined with the components of other embodiments.

1 Rotator, 2 Rotator core, 3 Permanent magnet, 4a Inner diameter side columnar member, 4b Outer diameter side columnar member, 5 Magnet insertion hole, 6a Inner diameter side flux barrier hole, 6b Outer diameter side flux barrier hole, 7 Adhesive, 8a inner diameter side outer peripheral columnar member insertion groove, 8b outer diameter side outer peripheral columnar member insertion groove, 8c inner diameter side inner peripheral columnar member insertion groove, 8d outer diameter side inner peripheral columnar member insertion groove

Claims (6)

In a rotor of a rotary electric machine in which a permanent magnet is incorporated in a rotor core, the permanent magnet is inserted into the rotor core, and a magnet insertion hole in which the permanent magnet is fixed by an adhesive and the magnet. An inner diameter side flux barrier hole provided at the inner diameter side end of the rotor core of the insertion hole, and an outer diameter side flux barrier hole provided at the outer diameter side end of the magnet insertion hole of the rotor core. The inner diameter is provided with a columnar columnar member arranged between at least one of the inner diameter side flux barrier hole and the outer diameter side flux barrier hole and the permanent magnet, and the columnar member is arranged. The rotation of the rotary electric machine is characterized in that the side flux barrier hole or the outer diameter side flux barrier hole is filled with an amount of adhesive smaller than the amount of the adhesive filled in the magnet insertion hole. Child. The rotor of a rotary electric machine according to claim 1, wherein the columnar member is in contact with either the rotor core and the permanent magnet inside the magnet insertion hole. The rotor of a rotary electric machine according to claim 1, wherein the columnar member is in contact with both the rotor core and the permanent magnet inside the magnet insertion hole. The rotor of a rotary electric machine according to claim 1, wherein the columnar member constitutes a coupled body fixed to the permanent magnet. An electromagnetic steel sheet processing process in which the rotor core pieces that make up the rotor core are punched out from the electromagnetic steel sheet that is the base material, and at the same time, magnet insertion holes, inner diameter side flux barrier holes, and outer diameter side flux barrier holes are formed.
An electromagnetic steel sheet laminating process in which rotor steel core pieces formed of electromagnetic steel sheets are laminated to form a rotor steel core, and
After integrating the rotor core pieces, a columnar member insertion step of inserting the inner diameter side columnar member and the outer diameter side columnar member into the magnet insertion hole from the stacking direction of the rotor core.
An adhesive filling step of filling the magnet insertion hole with an adhesive,
A permanent magnet insertion step of inserting a permanent magnet into the magnet insertion hole from the stacking direction of the rotor core,
The method for manufacturing a rotor of a rotary electric machine according to claim 1, further comprising. The rotor core pieces that make up the rotor core are punched out from the electrical steel sheet that is the base material, and the magnet insertion hole, inner diameter side flux barrier hole, outer diameter side flux barrier hole, inner diameter side outer peripheral columnar member insertion groove, outer diameter side outer circumference. The process of processing electrical steel sheets that form columnar member insertion grooves,
An electromagnetic steel sheet laminating process in which rotor steel core pieces formed of electromagnetic steel sheets are laminated to form a rotor steel core, and
Permanent magnets that form a composite by fixing the inner diameter side columnar member and the outer diameter side columnar member to the permanent magnet, the columnar member coupling process,
A composite body insertion step of inserting the inner diameter side columnar member and the coupling body of the outer diameter side columnar member and the permanent magnet into the magnet insertion hole from the stacking direction of the rotor core.
An adhesive filling step of filling the magnet insertion hole with an adhesive,
The method for manufacturing a rotor of a rotary electric machine according to claim 1, further comprising.

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